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| 1. |
What for the following abbreviation stand? CFC, PCB, HC, PAN, BOD, dB, ppm. |
| Answer» CFC-Chlorofluorocarbon, PCB-Polychlorinated biphenyl, HC-Hydrocarbon, PAN-Peroxyacyl nitrate, BOD - Biological Oxygen Demand, dB -Decibel, ppm - parts per million | |